Why don't you simply divide by 81 with a normal CMOS divider and
synchronize its output with a 7474-like flipflop to the original clock?
The phase noise would be determined only by this last flipflop.
regards, Gerhard
Am 18.06.20 um 13:58 schrieb Gilles Clement:
Hi
I need to divide the output of an OCXO by a factor D=81 for testing purposes.
So with minimum added phase noise.
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